CN114810271A - Control method for engine system and engine system - Google Patents
Control method for engine system and engine system Download PDFInfo
- Publication number
- CN114810271A CN114810271A CN202210511100.5A CN202210511100A CN114810271A CN 114810271 A CN114810271 A CN 114810271A CN 202210511100 A CN202210511100 A CN 202210511100A CN 114810271 A CN114810271 A CN 114810271A
- Authority
- CN
- China
- Prior art keywords
- engine
- electromagnetic valve
- temperature
- duration
- set value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a control method for an engine system and the engine system. The control method for the engine system includes: recording the duration of the engine after starting; judging whether the duration is less than a first set duration; if the duration is less than the first set duration, controlling the electromagnetic valve to be powered off and controlling the piston nozzle to spray oil; and if the duration is longer than or equal to the first set duration, controlling the electromagnetic valve according to the engine operation parameters. Specifically, when the duration of the engine after starting is less than a first set duration, oil is injected from a piston nozzle by controlling the electromagnetic valve to be powered off, and the engine oil injected from the piston nozzle is used for lubricating the structure of the piston, so that the working performance of the piston is improved; when the duration of the engine after being started is greater than or equal to the set duration, the opening of the electromagnetic valve is controlled through the operating parameters of the engine, so that the oil injection quantity of the piston nozzle is accurately controlled, and the service performance of an engine system is effectively improved.
Description
Technical Field
The invention relates to the technical field of engine systems, in particular to a control method for an engine system and the engine system.
Background
The piston nozzle belongs to a lubricating system of an engine, the engine is generally provided with the piston nozzle which is usually arranged on an oil passage of the engine, and the piston nozzle sprays cooling oil to a piston with higher thermal load in the running process of the engine.
In the existing control method, a control valve is arranged between a piston nozzle and an oil duct, the control valve is mostly a mechanical valve and an electromagnetic valve, and the oil injection quantity of the piston nozzle is controlled by adjusting the opening degree of the control valve. The existing control method for controlling the fuel injection quantity of the piston nozzle through the electromagnetic valve does not consider the influence of the duration of the engine after starting on an engine system, so that the control accuracy of the control method is low, and the reliability of the engine system is low.
Disclosure of Invention
The invention aims to provide a control method for an engine system and the engine system, and aims to solve the problem that the control method in the prior art is low in control accuracy.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method for an engine system, comprising:
recording the duration of the engine after starting;
judging whether the duration is less than a first set duration or not;
if the duration is less than the first set duration, controlling the electromagnetic valve to be powered off and controlling the piston nozzle to spray oil;
if the duration is greater than or equal to the first set duration, controlling the electromagnetic valve according to the engine operation parameters;
wherein the engine operating parameters include at least: exhaust temperature, engine oil pressure, water temperature, and in-cylinder temperature of the piston cylinder.
Preferably, the specific step of controlling the solenoid valve according to the engine operating parameters comprises:
judging whether the exhaust temperature is greater than a first temperature set value or not; judging whether the engine oil pressure is greater than a first pressure set value or not; judging whether the water temperature is greater than a second temperature set value or not; judging whether the temperature in the piston cylinder is greater than a third temperature set value or not;
if the exhaust temperature is higher than the first temperature set value, the engine oil pressure is higher than the first pressure set value, the water temperature is higher than the second temperature set value, and the temperature in the piston cylinder is higher than the third temperature set value, the electromagnetic valve is controlled to be powered off, and the piston nozzle is controlled to spray oil.
Preferably, the specific step of controlling the solenoid valve according to the engine operating parameters further comprises:
if the exhaust temperature is less than or equal to the first temperature set value, the engine oil pressure is less than or equal to the first pressure set value, the water temperature is less than or equal to the second temperature set value, and the in-cylinder temperature of the piston cylinder is less than or equal to the third temperature set value, judging whether the duration is greater than a second set duration;
and if the duration is longer than the second set duration, controlling the electromagnetic valve to be powered off and controlling the piston nozzle to spray oil.
Preferably, the specific step of controlling the solenoid valve according to the engine operating parameters further comprises:
if the duration is longer than the first set duration;
if the exhaust temperature is greater than or equal to the first temperature set value, determining a first adjusting coefficient according to the exhaust temperature, and adjusting the opening of the electromagnetic valve according to the first adjusting coefficient;
if the engine oil pressure is greater than or equal to the first pressure set value, determining a second adjusting coefficient according to the engine oil pressure, and adjusting the opening of the electromagnetic valve according to the second adjusting coefficient;
if the water temperature is larger than or equal to the second temperature set value, determining a third adjusting coefficient according to the water temperature, and adjusting the opening of the electromagnetic valve according to the third adjusting coefficient;
if the temperature in the piston cylinder is larger than or equal to the third temperature set value, determining a fourth adjusting coefficient according to the temperature in the piston cylinder, and adjusting the opening of the electromagnetic valve according to the fourth adjusting coefficient.
Preferably, before controlling the electromagnetic valve according to the engine operating parameters, the method further comprises:
and correcting the opening of the electromagnetic valve according to the output voltage of the electromagnetic valve, the viscosity of the engine oil and the aging degree of the electromagnetic valve.
Preferably, the control method for an engine system further includes:
when the circuit where the electromagnetic valve is located is electrified, whether the circuit where the electromagnetic valve is located is a passage or not is judged, and if the electromagnetic valve is in a short circuit or an open circuit, the circuit where the electromagnetic valve is located is reported to be in a fault.
Preferably, the control method for an engine system further includes:
judging whether the engine oil pressure is smaller than a second pressure set value or not;
if the engine oil pressure is smaller than the second pressure set value, reporting the fault of the electromagnetic valve;
wherein the second pressure set point is less than the first pressure set point.
Preferably, the control method for an engine system further includes:
when the piston nozzle injects oil, judging whether the engine load is greater than a set load in the previous working condition and whether the engine rotating speed is greater than a set rotating speed;
and if the engine load is greater than the set load in the last working condition and the engine speed is greater than the set speed, delaying a third set time length to control the electromagnetic valve in the working condition.
Preferably, the injection time length range of the injection of the piston nozzle is controlled as follows: 30 s-120 s.
An engine system to which the control method for an engine system described above is applied.
The invention has the beneficial effects that:
an object of the present invention is to provide a control method for an engine system, including: recording the duration of the engine after starting; judging whether the duration is less than a first set duration; if the duration is less than the first set duration, controlling the electromagnetic valve to be powered off and controlling the piston nozzle to spray oil; and if the duration is longer than or equal to the first set duration, controlling the electromagnetic valve according to the engine operation parameters. Specifically, the oil pump is communicated with the piston nozzle through the electromagnetic valve, when the duration of the engine after starting is shorter than a first set duration, oil is injected into the piston nozzle by controlling the electromagnetic valve to be powered off, and the oil injected out of the piston nozzle is used for lubricating the structure of the piston so as to improve the working performance of the piston; when the duration of the engine after being started is greater than or equal to the set duration, it can be understood that the temperature in the piston is higher at the moment, and the opening of the electromagnetic valve is controlled through the operating parameters of the engine, so that the oil injection quantity of the piston nozzle is accurately controlled, and the service performance of an engine system is effectively improved.
The invention also provides an engine system, and the engine system applies the control method for the engine system, so that the service performance of the engine system is effectively improved.
Drawings
FIG. 1 is a schematic illustration of a portion of an engine system according to an exemplary embodiment of the present disclosure;
FIG. 2 is a flow chart of a control method for an engine system provided by an exemplary embodiment of the present invention.
In the figure:
1. an oil pump; 2. an electromagnetic valve; 3. and a piston nozzle.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention provides an engine system, as shown in fig. 1, the engine system comprises an oil pump 1, an electromagnetic valve 2 and a piston, wherein an input port of the electromagnetic valve 2 is used for being communicated with an output port of the oil pump 1, and an output port of the electromagnetic valve 2 is used for being communicated with a piston nozzle 3 of the piston. Specifically, the oil pump 1 is installed on a piston cylinder (not shown in the figure) through an electromagnetic valve 2, an inner rotor of the oil pump 1 is directly driven to rotate by a crankshaft (not shown in the figure), lubricating oil is respectively pumped to an input port of the electromagnetic valve 2, and then the lubricating oil is conveyed to a piston nozzle 3 through an output port of the electromagnetic valve 2 through a piston cooling nozzle oil duct; the quantity of the lubricating oil flowing into the piston cooling nozzle oil passage can be controlled through the electromagnetic valve 2, specifically, when the electromagnetic valve 2 is in a fully open state, the oil pump 1 is directly communicated with the piston nozzle 3, the flow rate of the lubricating oil delivered to the piston nozzle 3 by the oil pump 1 is the largest, when the electromagnetic valve 2 is in a fully closed state, the oil pump 1 cannot deliver the lubricating oil to the piston nozzle 3, and it can be understood that the quantity of the lubricating oil delivered to the piston nozzle 3 in a unit time is larger as the opening degree of the electromagnetic valve 2 is continuously increased.
Specifically, in the present embodiment, the electromagnetic valve 2 is a proportional electromagnetic valve.
The specific structures of the oil pump 1, the electromagnetic valve 2 and the piston nozzle 3 belong to the prior art, and are not described herein again.
The present invention also provides a control method for an engine system, as shown in fig. 2, including:
and S100, starting an engine system.
And S200, recording the duration of the engine after starting.
Specifically, the engine system further includes a timer for recording a duration of time after the engine system is started.
S300, judging whether the duration is less than a first set duration.
If the duration is less than the first set duration, performing S310; if the duration is greater than or equal to the first set duration, S320 is performed.
And S310, controlling the electromagnetic valve 2 to be powered off, and controlling the piston nozzle 3 to spray oil.
Specifically, when the duration of the engine after starting is less than a first set duration, the electromagnetic valve 2 is controlled to be powered off to enable the piston nozzle 3 to inject oil, and the engine oil sprayed out of the piston nozzle 3 is used for lubricating the structure of the piston, so that the working performance of the piston in subsequent work is improved.
Specifically, the injection time length range of the control piston nozzle 3 injection is: 30 s-120 s. To ensure proper lubrication of the piston. It will be appreciated that the length of injection of the fuel from the piston nozzle 3 can also be adjusted and controlled in accordance with the actual operating conditions of the vehicle.
Wherein, the first set time length is an empirical value obtained by a plurality of experiments in the early stage.
And S320, controlling the electromagnetic valve 2 according to the engine operation parameters.
Wherein the engine operating parameters include at least: exhaust temperature, engine oil pressure, water temperature, and in-cylinder temperature of the piston cylinder. It will be appreciated that other parameters may be added depending on the actual operating condition suitability of the vehicle.
Specifically, after the duration of the engine after starting is greater than or equal to the set duration, it can be understood that the temperature in the piston is higher at this time, and the opening degree of the electromagnetic valve 2 is controlled through the operating parameters of the engine, so as to accurately control the fuel injection quantity of the piston nozzle 3, thereby effectively improving the service performance of the engine system.
Specifically, the specific steps of controlling the solenoid valve 2 according to the engine operating parameters include:
s321, judging whether the exhaust temperature is greater than a first temperature set value; judging whether the engine oil pressure is greater than a first pressure set value or not; judging whether the water temperature is greater than a second temperature set value or not; and judging whether the temperature in the piston cylinder is greater than a third temperature set value or not.
If the exhaust temperature is greater than the first temperature setting value, the engine oil pressure is greater than the first pressure setting value, the water temperature is greater than the second temperature setting value, and the in-cylinder temperature of the piston cylinder is greater than the third temperature setting value, S3211 is performed.
If the exhaust temperature is less than or equal to the first temperature set value, the engine oil pressure is less than or equal to the first pressure set value, the water temperature is less than or equal to the second temperature set value, and the in-cylinder temperature of the piston cylinder is less than or equal to the third temperature set value, S3212 is performed.
And S3211, controlling the electromagnetic valve 2 to be powered off, and controlling the piston nozzle 3 to spray oil.
It can be understood that, after the duration of time after the engine is started is greater than or equal to the first set duration, the temperature of the piston continuously rises along with the continuous increase of the duration of time, at this time, if it is determined that the exhaust temperature is greater than the first temperature set value, the engine oil pressure is greater than the first pressure set value, the water temperature is greater than the second temperature set value, and the temperature in the cylinder of the piston cylinder is greater than the third temperature set value, it indicates that the temperature of the piston is high, the oil pump 1 needs to be communicated with the piston nozzle 3 by controlling the electromagnetic valve 2, so that the oil pump 1 pumps the engine oil to the piston nozzle 3, and the piston nozzle 3 injects oil to cool the piston.
It can be understood that when the electromagnetic valve 2 is in the power-off state, the opening degree of the electromagnetic valve 2 is the largest at this time, and the engine oil pumped by the engine oil pump 1 can be directly pumped to the piston through the electromagnetic valve 2 to be sprayed, so that the piston can be cooled quickly and effectively.
S3212, judging whether the duration is greater than a second set duration.
If the duration is longer than the second set duration, the electromagnetic valve 2 is controlled to be powered off, and the piston nozzle 3 is controlled to spray oil.
It will be appreciated that when the duration of time after the engine start is greater than the first set time period, of the operating parameters of the engine system: the exhaust temperature is less than or equal to a first temperature set value, the engine oil pressure is less than or equal to a first pressure set value, the water temperature is less than or equal to a second temperature set value, and the temperature in the piston cylinder is less than or equal to a third temperature set value until the duration of the engine after starting is greater than a second set duration, which indicates that the duration of the engine system under the operation parameters is long enough, under the condition, the working duration of the piston is long enough, the electromagnetic valve 2 needs to be controlled to be powered off, so that the opening degree of the electromagnetic valve 2 reaches the maximum, the engine oil pumped by the engine oil pump 1 can be directly pumped to the piston nozzle 3 through the electromagnetic valve 2, and the lubricating oil sprayed by the piston nozzle 3 is used for lubricating the structure of the piston, so that the working performance of the piston in subsequent work is improved; it will be appreciated that the portion of the lubricating oil ejected by the piston nozzle 3 can also cool the piston, in addition to the structure of the lubricating piston.
If the duration is longer than the first set duration, if the exhaust temperature is greater than or equal to the first temperature set value, then S3213 is performed. It is understood that the duration is greater than the first set duration and less than the second set duration.
And S3213, determining a first adjustment coefficient according to the exhaust temperature, and adjusting the opening of the electromagnetic valve 2 according to the first adjustment coefficient.
Specifically, the exhaust temperature is divided into a plurality of exhaust temperature intervals, each exhaust temperature interval corresponds to a first adjustment coefficient, so as to adjust the opening degree of the electromagnetic valve 2 by the first adjustment coefficient, and it can be understood that the value of the first adjustment coefficient continuously increases with the continuous increase of the exhaust temperature. Wherein, the specific value of the first adjusting coefficient is an empirical value obtained by a large number of experiments in the early stage.
If the duration is greater than the first set duration, if the oil pressure is greater than or equal to the first pressure set value, then S3214 is performed. It is understood that the duration is greater than the first set duration and less than the second set duration.
And S3214, determining a second adjustment coefficient according to the oil pressure, and adjusting the opening degree of the electromagnetic valve 2 according to the second adjustment coefficient.
Specifically, the oil pressure is divided into a plurality of pressure intervals, each pressure interval corresponds to a second adjustment coefficient, so as to adjust the opening degree of the electromagnetic valve 2 by the second adjustment coefficient, and it can be understood that the value of the second adjustment coefficient continuously increases with the continuous increase of the oil pressure. Wherein, the specific value of the second adjusting coefficient is an empirical value obtained by a large number of experiments in the early stage.
If the duration is longer than the first set duration, if the water temperature is longer than or equal to the second set temperature value, S3215. It is understood that the duration is greater than the first set duration and less than the second set duration.
And S3215, determining a third adjustment coefficient according to the water temperature, and adjusting the opening degree of the electromagnetic valve 2 according to the third adjustment coefficient.
Specifically, the water temperature is divided into a plurality of water temperature intervals, and each water temperature interval corresponds to a third adjustment coefficient, so as to adjust the opening degree of the electromagnetic valve 2 by the third adjustment coefficient, it can be understood that the value of the third adjustment coefficient continuously increases with the continuous increase of the water temperature. Wherein, the specific value of the third adjusting coefficient is an empirical value obtained by a large number of experiments in the early stage.
If the duration is longer than the first set duration, if the in-cylinder temperature of the piston cylinder is greater than or equal to the third temperature set value, S3216. It is understood that the duration is greater than the first set duration and less than the second set duration.
S3216, determining a fourth adjustment coefficient according to the temperature in the piston cylinder, and adjusting the opening degree of the electromagnetic valve 2 according to the fourth adjustment coefficient.
Specifically, the in-cylinder temperature of the piston cylinder is divided into a plurality of in-cylinder temperature intervals, each in-cylinder temperature interval corresponds to one fourth adjustment coefficient, so as to adjust the opening degree of the electromagnetic valve 2 by the fourth adjustment coefficient, and it can be understood that the value of the fourth adjustment coefficient continuously increases along with the continuous increase of the in-cylinder temperature. Wherein, the specific value of the fourth adjusting coefficient is an empirical value obtained by a large number of experiments in the early stage.
Wherein, the steps S3211 to S3216 are not in sequence. The present embodiment merely exemplifies that steps S3211 to S3216 are performed in sequence.
Specifically, when the duration is longer than a first set duration, if two or three of a first temperature set value of exhaust temperature, a first pressure set value of engine oil pressure, a second temperature set value of water temperature and a third temperature set value of cylinder temperature of the piston cylinder exist, the adjustment coefficient I for adjusting the opening degree of the electromagnetic valve 2 is the product of the corresponding adjustment coefficients under each condition. For example, if the duration is longer than the first set duration, if the exhaust temperature is equal to or lower than the first temperature set value and the oil pressure is equal to or lower than the first pressure set value, the adjustment coefficient I of the opening of the solenoid valve 2 is I1 × I2, where I1 is the first adjustment coefficient, I2 is the second adjustment coefficient, and I is the adjustment coefficient of the opening of the solenoid valve 2.
In order to avoid the influence of the output voltage of the electromagnetic valve 2, the viscosity of the engine oil, and the aging degree of the electromagnetic valve 2 on the accuracy of the opening degree of the electromagnetic valve 2, step S400 is further included before the electromagnetic valve 2 is controlled according to the engine operating parameters.
And S400, correcting the opening degree of the electromagnetic valve 2 according to the output voltage of the electromagnetic valve 2, the viscosity of the engine oil and the aging degree of the electromagnetic valve 2. So set up, in order to realize further accurate regulation solenoid valve 2's aperture.
Specifically, the specific steps of correcting the opening degree of the solenoid valve 2 according to the output voltage of the ECU, the viscosity of the oil, and the degree of aging of the solenoid valve 2 include S410 to S430.
And S410, correcting the opening of the electromagnetic valve 2 according to the output voltage of the electromagnetic valve 2.
Specifically, the MAP1 of the output voltage of the solenoid valve 2 and the opening degree of the solenoid valve 2 is obtained from a large number of previous experiments, and the fifth adjustment coefficient is determined from the MAP 1. The specific process of determining the fifth adjustment coefficient according to the MAP1 belongs to the prior art, and is not described herein again.
And S420, correcting the opening of the electromagnetic valve 2 according to the viscosity of the engine oil.
Specifically, MAP2 of the viscosity of the oil and the opening degree of the solenoid valve 2 is obtained from a large number of previous tests, and the sixth adjustment coefficient is determined in accordance with MAP 2. The specific process of determining the sixth adjustment coefficient according to the MAP2 belongs to the prior art, and is not described herein again.
And S430, correcting the opening of the solenoid valve 2 according to the aging degree of the solenoid valve 2.
Specifically, the MAP3 of the degree of deterioration of the solenoid valve 2 and the opening degree of the solenoid valve 2 is obtained from a large number of previous experiments, and the seventh adjustment coefficient is determined from the MAP 3. The specific process of determining the seventh adjustment coefficient according to MAP3 belongs to the prior art, and is not described herein again.
Specifically, steps S410 to S430 are not in order. The present embodiment merely exemplarily shows that the steps S410 to S430 are sequentially performed.
In order to avoid the phenomenon that the engine system cannot work normally due to the fault of the circuit where the electromagnetic valve 2 is located, the control method for the engine system further comprises a step S500.
S500, when the electromagnetic valve 2 is electrified, whether a circuit where the electromagnetic valve 2 is located is a passage or not is judged, and if the electromagnetic valve 2 is in a short circuit or an open circuit, a fault of the circuit where the electromagnetic valve 2 is located is reported.
The arrangement is convenient for judging whether the circuit where the electromagnetic valve 2 is located can work normally.
Specifically, step S500 may be applied between any adjacent two steps of steps S100 to S3216 of the control method for an engine system.
In order to avoid the phenomenon that the engine system cannot work normally due to the failure of the electromagnetic valve 2, the control method for the engine system further comprises the step S600.
S600, when the piston nozzle 3 injects oil, whether the engine oil pressure value is smaller than a second pressure set value or not is judged, and if the engine oil pressure is smaller than the second pressure set value, a fault of the electromagnetic valve 2 is reported.
Wherein the second pressure set point is less than the first pressure set point.
It can be understood that if the oil pressure is less than the second pressure setting value, the amount of the lubricating oil flowing through the solenoid valve 2 cannot be controlled by adjusting the opening degree of the solenoid valve 2, wherein, in the present embodiment, the failure of the solenoid valve 2 mainly includes the jamming of the solenoid valve 2 or the leakage of the solenoid valve 2. So set up to judge whether solenoid valve 2 itself can normally work. It will be appreciated that step S500 may be performed during each injection of oil by the piston nozzle 3.
It will be appreciated that the present condition is initiated at the same time as the previous condition is ended. In order to avoid the phenomenon of excessive injection of lubricating oil caused by short time interval between the start of the control of the electromagnetic valve 2 and the end of the operation of the electromagnetic valve 2 in the previous working condition after the previous working condition is finished and the working condition is carried out, the control method for the engine system further comprises the following steps.
Judging whether the engine load is greater than a set load and the engine speed is greater than a set speed in the previous working condition; if the engine load is greater than the set load in the previous working condition and the engine speed is greater than the set speed, the third set time length is delayed to control the electromagnetic valve 2 in the current working condition.
So set up to whether realize accurate control solenoid valve 2 and need the action, can effectively avoid the engine system to begin control solenoid valve 2 by this operating mode and end the short lubricating oil excessive injection that causes of time interval between the work of last operating mode solenoid valve 2, thereby realize whether accurate control solenoid valve 2 moves.
Wherein the third set time period is an empirical value obtained by a large number of experiments in the early stage.
The engine system provided by the invention adopts the control method for the engine system, so that the service performance of the engine system is effectively improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A control method for an engine system, comprising:
recording the duration of the engine after starting;
judging whether the duration is less than a first set duration or not;
if the duration is less than the first set duration, controlling the electromagnetic valve (2) to be powered off and controlling the piston nozzle (3) to spray oil;
if the duration is greater than or equal to the first set duration, controlling the electromagnetic valve (2) according to engine operation parameters;
wherein the engine operating parameters include at least: exhaust temperature, engine oil pressure, water temperature, and in-cylinder temperature of the piston cylinder.
2. A control method for an engine system according to claim 1, characterized in that the specific step of controlling the solenoid valve (2) in dependence of engine operating parameters comprises:
judging whether the exhaust temperature is greater than a first temperature set value or not; judging whether the engine oil pressure is greater than a first pressure set value or not; judging whether the water temperature is greater than a second temperature set value or not; judging whether the temperature in the piston cylinder is greater than a third temperature set value or not;
if the exhaust temperature is higher than the first temperature set value, the engine oil pressure is higher than the first pressure set value, the water temperature is higher than the second temperature set value, and the temperature in the piston cylinder is higher than the third temperature set value, the electromagnetic valve (2) is controlled to be powered off, and the piston nozzle (3) is controlled to spray oil.
3. The control method for an engine system according to claim 2, wherein the specific step of controlling the solenoid valve (2) in accordance with the engine operating parameter further comprises:
if the exhaust temperature is less than or equal to the first temperature set value, the engine oil pressure is less than or equal to the first pressure set value, the water temperature is less than or equal to the second temperature set value, and the in-cylinder temperature of the piston cylinder is less than or equal to the third temperature set value, judging whether the duration is greater than a second set duration;
if the duration is longer than the second set duration, the electromagnetic valve (2) is controlled to be powered off, and the piston nozzle (3) is controlled to spray oil.
4. The control method for an engine system according to claim 2, wherein the specific step of controlling the solenoid valve (2) in accordance with the engine operating parameter further comprises:
if the duration is longer than the first set duration;
if the exhaust temperature is larger than or equal to the first temperature set value, determining a first adjusting coefficient according to the exhaust temperature, and adjusting the opening of the electromagnetic valve (2) according to the first adjusting coefficient;
if the engine oil pressure is greater than or equal to the first pressure set value, determining a second adjusting coefficient according to the engine oil pressure, and adjusting the opening of the electromagnetic valve (2) according to the second adjusting coefficient;
if the water temperature is larger than or equal to the second temperature set value, determining a third adjusting coefficient according to the water temperature, and adjusting the opening of the electromagnetic valve (2) according to the third adjusting coefficient;
and if the in-cylinder temperature of the piston cylinder is greater than or equal to the third temperature set value, determining a fourth adjusting coefficient according to the in-cylinder temperature of the piston cylinder, and adjusting the opening degree of the electromagnetic valve (2) according to the fourth adjusting coefficient.
5. The control method for an engine system according to any one of claims 1 to 4, characterized in that before controlling the solenoid valve (2) in accordance with the engine operating parameter, further comprising:
and correcting the opening degree of the electromagnetic valve (2) according to the output voltage of the electromagnetic valve (2), the viscosity of the engine oil and the aging degree of the electromagnetic valve (2).
6. The control method for the engine system according to any one of claims 1 to 4, characterized in that the control method for the engine system further includes:
when the electromagnetic valve (2) is electrified, whether a circuit where the electromagnetic valve (2) is located is a passage or not is judged, and if the electromagnetic valve (2) is in a short circuit or an open circuit, a fault of the circuit where the electromagnetic valve (2) is located is reported.
7. The control method for the engine system according to any one of claims 2 to 4, characterized in that the control method for the engine system further includes:
when the piston nozzle (3) injects oil, judging whether the engine oil pressure is smaller than a second pressure set value;
if the engine oil pressure is smaller than the second pressure set value, reporting the fault of the electromagnetic valve (2);
wherein the second pressure set point is less than the first pressure set point.
8. The control method for the engine system according to any one of claims 1 to 4, characterized in that the control method for the engine system further includes:
judging whether the engine load is greater than a set load and the engine speed is greater than a set speed in the previous working condition;
and if the engine load is greater than the set load in the previous working condition and the engine speed is greater than the set speed, delaying a third set time length to control the electromagnetic valve (2) in the current working condition.
9. The control method for an engine system according to any one of claims 1 to 4, characterized in that the injection duration for controlling the injection of the piston nozzle (3) ranges from: 30 s-120 s.
10. An engine system characterized by applying the control method for an engine system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511100.5A CN114810271B (en) | 2022-05-11 | 2022-05-11 | Control method for engine system and engine system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511100.5A CN114810271B (en) | 2022-05-11 | 2022-05-11 | Control method for engine system and engine system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114810271A true CN114810271A (en) | 2022-07-29 |
| CN114810271B CN114810271B (en) | 2024-04-16 |
Family
ID=82513277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210511100.5A Active CN114810271B (en) | 2022-05-11 | 2022-05-11 | Control method for engine system and engine system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114810271B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234356A (en) * | 2022-08-19 | 2022-10-25 | 潍柴动力股份有限公司 | Electric control piston cooling nozzle and control method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649747A (en) * | 2016-01-06 | 2016-06-08 | 潍柴动力股份有限公司 | Electronically controlled piston cooling nozzle control method and system |
| CN106246332A (en) * | 2015-06-12 | 2016-12-21 | 现代自动车株式会社 | For diagnosing the apparatus and method of the fault of the piston cooling nozzle of electromotor |
| CN106481429A (en) * | 2015-08-28 | 2017-03-08 | 长城汽车股份有限公司 | A kind of piston cooling nozzle control method and control system |
| CN107781022A (en) * | 2016-08-24 | 2018-03-09 | 福特环球技术公司 | Via the method and apparatus of controllable piston cooling nozzle regulation oil pressure |
| US20190078493A1 (en) * | 2017-09-08 | 2019-03-14 | Hyundai Motor Company | Method and system for diagnosing failure of piston cooling device |
| CN109505691A (en) * | 2018-12-18 | 2019-03-22 | 安徽江淮汽车集团股份有限公司 | Piston cools down injection system, engine and fuel injection control method |
| CN109838298A (en) * | 2019-03-11 | 2019-06-04 | 潍柴动力股份有限公司 | A kind of commercial vehicle piston cooling nozzle control method and control system |
| CN111734520A (en) * | 2020-06-24 | 2020-10-02 | 中国第一汽车股份有限公司 | Piston cooling nozzle control method and system after engine shutdown and vehicle |
| CN111878214A (en) * | 2020-06-30 | 2020-11-03 | 东风汽车集团有限公司 | Method and system for adaptive control of piston cooling nozzle |
| CN113074041A (en) * | 2021-04-08 | 2021-07-06 | 浙江吉利控股集团有限公司 | Electric control piston cooling nozzle control method and system, automobile and readable storage medium |
| CN113266455A (en) * | 2020-02-14 | 2021-08-17 | 广州汽车集团股份有限公司 | Piston cooling nozzle control method, device and system and storage medium |
| CN114233461A (en) * | 2022-02-24 | 2022-03-25 | 潍坊力创电子科技有限公司 | Engine piston cooling control method |
-
2022
- 2022-05-11 CN CN202210511100.5A patent/CN114810271B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246332A (en) * | 2015-06-12 | 2016-12-21 | 现代自动车株式会社 | For diagnosing the apparatus and method of the fault of the piston cooling nozzle of electromotor |
| CN106481429A (en) * | 2015-08-28 | 2017-03-08 | 长城汽车股份有限公司 | A kind of piston cooling nozzle control method and control system |
| CN105649747A (en) * | 2016-01-06 | 2016-06-08 | 潍柴动力股份有限公司 | Electronically controlled piston cooling nozzle control method and system |
| CN107781022A (en) * | 2016-08-24 | 2018-03-09 | 福特环球技术公司 | Via the method and apparatus of controllable piston cooling nozzle regulation oil pressure |
| US20190078493A1 (en) * | 2017-09-08 | 2019-03-14 | Hyundai Motor Company | Method and system for diagnosing failure of piston cooling device |
| CN109505691A (en) * | 2018-12-18 | 2019-03-22 | 安徽江淮汽车集团股份有限公司 | Piston cools down injection system, engine and fuel injection control method |
| CN109838298A (en) * | 2019-03-11 | 2019-06-04 | 潍柴动力股份有限公司 | A kind of commercial vehicle piston cooling nozzle control method and control system |
| CN113266455A (en) * | 2020-02-14 | 2021-08-17 | 广州汽车集团股份有限公司 | Piston cooling nozzle control method, device and system and storage medium |
| CN111734520A (en) * | 2020-06-24 | 2020-10-02 | 中国第一汽车股份有限公司 | Piston cooling nozzle control method and system after engine shutdown and vehicle |
| CN111878214A (en) * | 2020-06-30 | 2020-11-03 | 东风汽车集团有限公司 | Method and system for adaptive control of piston cooling nozzle |
| CN113074041A (en) * | 2021-04-08 | 2021-07-06 | 浙江吉利控股集团有限公司 | Electric control piston cooling nozzle control method and system, automobile and readable storage medium |
| CN114233461A (en) * | 2022-02-24 | 2022-03-25 | 潍坊力创电子科技有限公司 | Engine piston cooling control method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234356A (en) * | 2022-08-19 | 2022-10-25 | 潍柴动力股份有限公司 | Electric control piston cooling nozzle and control method |
| CN115234356B (en) * | 2022-08-19 | 2024-01-12 | 潍柴动力股份有限公司 | Electric control piston cooling nozzle and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114810271B (en) | 2024-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69331475T2 (en) | Fuel injection regulator for internal combustion engines. | |
| CN109838298B (en) | Control method and control system for piston cooling nozzle of commercial vehicle | |
| DE19728351B4 (en) | Method for thermoregulation of an internal combustion engine | |
| CN101968018B (en) | Common rail system of diesel oil injector detection table and method thereof for controlling rail pressure in system | |
| CN103573449B (en) | The controlling method of common rail pressure-limit valve | |
| CN111734520B (en) | Piston cooling nozzle control method and system after engine shutdown and vehicle | |
| US20120095668A1 (en) | Method for feed-forward controlling fuel injection into a cylinder of an internal combustion engine | |
| DE102010043920A1 (en) | Method for avoiding turbocharger damage | |
| DE102010047631A1 (en) | A fuel supply control apparatus for an internal combustion engine and associated fuel supply control method | |
| CN105649747A (en) | Electronically controlled piston cooling nozzle control method and system | |
| CN114151258B (en) | Oil return fault diagnosis method of oil sprayer, fuel system and internal combustion engine | |
| CN113187579B (en) | Engine lubrication system and control method thereof | |
| CN114810271B (en) | Control method for engine system and engine system | |
| US8332125B2 (en) | Method for controlling at least one solenoid valve | |
| CN104066961A (en) | Control devices for internal combustion engines | |
| WO2006127794A2 (en) | Method and system for controlling fuel injection timing to maintain desired peak cylinder pressure for high altitude operation | |
| CN104047750B (en) | Fuel of internal combustion engine emitted dose monitoring method | |
| EP3572657B1 (en) | Method of operating an internal combustion engine | |
| CN109790790A (en) | The piston temperature condition monitoring system of internal combustion engine and the piston temperature of internal combustion engine monitor method | |
| CN113187614B (en) | Electronic throttle valve control method and electronic control unit | |
| US20120271535A1 (en) | Method for managing the automatic stoppage of an automobile | |
| US10378501B2 (en) | Systems and method for performing prognosis of fuel delivery systems using solenoid current feedback | |
| US7010908B2 (en) | Anomaly judgment apparatus for secondary air supply system | |
| CN111946521A (en) | Control method for improving cold starting performance of internal combustion engine | |
| US9279381B2 (en) | Method and device for controlling an internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |